About Substance abuse and Addictive behaviour

Substance abuse is a disorder characterised by excessive use of habit forming drugs or misuse of over the counter medicine, illegal use of drugs which in turn leads to severe addiction and dependence with many negative consequences.

Addictive behaviour is a concept that was formerly used to explain addiction as the result of pre-existing character defects in individuals. This hypothesis states that there are common elements among people with varying addictions that relates to personality traits.